HP 8920B - Page 618

618
Chapter 8, Programming The Call Processing Subsystem
Programming The ANALOG MEAS Screen
Example FM Hum & Noise Measurement
The following example code segment shows how to program the ANALOG MEAS
screen to make an FM Hum & Noise measurement. The code segment represents
a HP RM BASIC subprogram.
In order for this subprogram to work properly the following conditions must be
true when the subroutine is called:
• Call Processing Subsystem is in the Connect state (that is, the Connect annunciator
is lit)
• the mobile station’s speaker output is connected to the Test Set’s AUDIO IN connector
• the mobile station’s microphone input must be connected to the Test Set’s AUDIO
OUT connector
The intended purpose of this example subprogram is to illustrate how to program
the ANALOG MEAS screen. There are a variety of ways to make an FM Hum &
Noise measurement. The method used in this example is based upon the EIA/IS-
19-B Standard (May 1988). The method and standard chosen for any particular
application will depend upon the mobile station being tested.